653
CDUS45 KRIW 210727
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT TUE OCT 21 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR OCTOBER 20 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 55 1:34 PM 77 2014 58 -3 71
2017
2023
MINIMUM 34 11:39 PM 21 1999 32 2 32
AVERAGE 45 45 0 52
PRECIPITATION (IN)
YESTERDAY T 0.47 2007 0.02 -0.02 0.00
MONTH TO DATE 1.89 0.49 1.40 0.22
SINCE SEP 1 2.54 1.32 1.22 0.60
SINCE JAN 1 6.74 5.14 1.60 5.91
DEGREE DAYS
HEATING
YESTERDAY 20 20 0 13
MONTH TO DATE 286 318 -32 171
SINCE SEP 1 347 487 -140 241
SINCE JUL 1 347 506 -159 254
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 2
SINCE SEP 1 50 46 4 91
SINCE JAN 1 791 742 49 832
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 5.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 33 3:00 PM
AVERAGE 63
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 83 2003
MINIMUM TEMPERATURE (F) 31 23 1998
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 7:36 AM MDT SUNSET 6:17 PM MDT
OCTOBER 22 2025.......SUNRISE 7:37 AM MDT SUNSET 6:16 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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